Introduction:
Here I will explain how to export only selected or checked rows or records from gridview to Word or Excel sheet using asp.net.
Description:
C# Code
Check this post to solve this problem
Here I will explain how to export only selected or checked rows or records from gridview to Word or Excel sheet using asp.net.
Description:
In my previous posts I explained clearly how to export gridview data to Excel or word using asp.net and how to export gridview data to PDF using asp.net and explained another post that is Export gridview data to CSV file using asp.net. After explain all the concepts one of the user has asked me a question i.e. how to export gridview records to excel/word based on checkbox selection in gridview. To implement this one first design one table in database as shown below and give name as “UserInformation”
ColumnName | DataType |
UserId | Int(set identity property=true) |
UserName | varchar(50) |
LastName | varchar(50) |
Location | varchar(50) |
After completion of table creation enter some dummy data and design aspx page like this
<html xmlns="http://www.w3.org/1999/xhtml"> <head id="Head1" runat="server"> <title>Export Selected records from Gridview to Excel/ Word</title> <style type="text/css"> .GridviewDiv {font-size: 100%; font-family: 'Lucida Grande', 'Lucida Sans Unicode', Verdana, Arial, Helevetica, sans-serif; color: #303933;} Table.Gridview{border:solid 1px #df5015;} .Gridview th{color:#FFFFFF;border-right-color:#abb079;border-bottom-color:#abb079;padding:0.5em 0.5em 0.5em 0.5em;text-align:center} .Gridview td{border-bottom-color:#f0f2da;border-right-color:#f0f2da;padding:0.5em 0.5em 0.5em 0.5em;} .Gridview tr{color: Black; background-color: White; text-align:left} :link,:visited { color: #DF4F13; text-decoration:none } .highlight {text-decoration: none;color:black;background:yellow;} </style> </head> <body> <form id="form1" runat="server"> <div> <table> <tr> <td align="right"> <asp:ImageButton ID="btnExcel" runat="server" ImageUrl="~/ExcelImage.jpg" onclick="btnExportExcel_Click" /> <asp:ImageButton ID="btnWord" runat="server" ImageUrl="~/WordImage.jpg" onclick="btnWord_Click" /> </td> </tr> <tr> <td> <div class="GridviewDiv"> <asp:GridView ID="gvdetails" runat="server" AutoGenerateColumns="False" AllowPaging="True" AllowSorting="true" Width="540px" PageSize="10" CssClass="Gridview" DataKeyNames="UserId" OnPageIndexChanging="gvdetails_PageIndexChanging" > <HeaderStyle BackColor="#df5015" /> <Columns> <asp:TemplateField> <ItemTemplate> <asp:CheckBox ID="chkSelect" runat="server" /> </ItemTemplate> </asp:TemplateField> <asp:BoundField DataField="UserId" HeaderText="UserId" /> <asp:BoundField DataField="UserName" HeaderText="UserName" /> <asp:BoundField DataField="LastName" HeaderText="LastName" /> <asp:BoundField DataField="Location" HeaderText="Location" /> </Columns> </asp:GridView> </div> </td> </tr> </table> </div> </form> </body> </html> |
Now in code behind add following namespace references
using System; using System.Collections; using System.Data; using System.Data.SqlClient; using System.IO; using System.Web.UI; using System.Web.UI.WebControls; |
After that write the following code in code behind
C# Code
protected void Page_Load(object sender, EventArgs e) { if (!IsPostBack) { BindGridData(); } } /// <summary> /// This Method is used to bind gridview /// </summary> private void BindGridData() { SqlConnection con = new SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB"); SqlCommand cmd = new SqlCommand("select * from UserInformation", con); SqlDataAdapter da = new SqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds); gvdetails.DataSource = ds; gvdetails.DataBind(); } public override void VerifyRenderingInServerForm(Control control) { /*Verifies that the control is rendered */ } protected void gvdetails_PageIndexChanging(object sender, GridViewPageEventArgs e) { SaveCheckedValues(); gvdetails.PageIndex = e.NewPageIndex; BindGridData(); PopulateCheckedValues(); } /// <summary> /// This event is used to export gridview data to Excel document /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnExportExcel_Click(object sender, EventArgs e) { ExportFunction("attachment;filename=GridViewExport.xls", "application/vnd.ms-excel"); } /// <summary> /// This event is used to export gridview data to word document /// </summary> /// <param name="sender"></param> /// <param name="e"></param> protected void btnWord_Click(object sender, EventArgs e) { ExportFunction("attachment;filename=GridViewExport.doc", "application/vnd.ms-word"); } /// <summary> /// This Function is used to generate Excel or word document with gridview checkbox selected values /// </summary> /// <param name="header"></param> /// <param name="contentType"></param> private void ExportFunction(string header, string contentType) { SaveCheckedValues(); Response.Clear(); Response.Buffer = true; Response.AddHeader("content-disposition", header); Response.Charset = ""; Response.ContentType = contentType; StringWriter sw = new StringWriter(); HtmlTextWriter hw = new HtmlTextWriter(sw); gvdetails.AllowPaging = false; BindGridData(); gvdetails.HeaderRow.Style.Add("background-color", "#FFFFFF"); gvdetails.HeaderRow.Cells[0].Visible = false; for (int i = 0; i < gvdetails.HeaderRow.Cells.Count; i++) { gvdetails.HeaderRow.Cells[i].Style.Add("background-color", "#df5015"); gvdetails.HeaderRow.Cells[i].Style.Add("color", "#FFFFFF"); } if (ViewState["CHECKED_ITEMS"] != null) { ArrayList CheckBoxArray = (ArrayList)ViewState["CHECKED_ITEMS"]; int rowIdx = 0; for (int i = 0; i < gvdetails.Rows.Count; i++) { GridViewRow row = gvdetails.Rows[i]; row.Visible = false; int index = (int)gvdetails.DataKeys[row.RowIndex].Value; if (CheckBoxArray.Contains(index)) { row.Visible = true; row.Cells[0].Visible = false; } } } gvdetails.RenderControl(hw); Response.Output.Write(sw.ToString()); Response.End(); } /// <summary> ///This method is used to populate the saved checked status of checkbox values /// </summary> private void PopulateCheckedValues() { ArrayList userdetails = (ArrayList)ViewState["CHECKED_ITEMS"]; if (userdetails != null && userdetails.Count > 0) { foreach (GridViewRow gvrow in gvdetails.Rows) { int index = (int)gvdetails.DataKeys[gvrow.RowIndex].Value; if (userdetails.Contains(index)) { CheckBox myCheckBox = (CheckBox)gvrow.FindControl("chkSelect"); myCheckBox.Checked = true; } } } } /// <summary> /// This method is used to save the checkedstate of checkbox values /// </summary> private void SaveCheckedValues() { ArrayList userdetails = new ArrayList(); int index = -1; foreach (GridViewRow gvrow in gvdetails.Rows) { index = (int)gvdetails.DataKeys[gvrow.RowIndex].Value; bool result = ((CheckBox)gvrow.FindControl("chkSelect")).Checked; // Check in the Session if (ViewState["CHECKED_ITEMS"] != null) userdetails = (ArrayList)ViewState["CHECKED_ITEMS"]; if (result) { if (!userdetails.Contains(index)) userdetails.Add(index); } else userdetails.Remove(index); } if (userdetails != null && userdetails.Count > 0) ViewState["CHECKED_ITEMS"] = userdetails; } | |
VB.NET Code
Imports System.Collections Imports System.Data Imports System.Data.SqlClient Imports System.IO Imports System.Web.UI Imports System.Web.UI.WebControls Partial Public Class VBExportData Inherits System.Web.UI.Page Protected Sub Page_Load(ByVal sender As Object, ByVal e As EventArgs) If Not IsPostBack Then BindGridData() End If End Sub ''' <summary> ''' This Method is used to bind gridview ''' </summary> Private Sub BindGridData() Dim con As New SqlConnection("Data Source=SureshDasari;Integrated Security=true;Initial Catalog=MySampleDB") Dim cmd As New SqlCommand("select * from UserInformation", con) Dim da As New SqlDataAdapter(cmd) Dim ds As New DataSet() da.Fill(ds) gvdetails.DataSource = ds gvdetails.DataBind() End Sub Public Overrides Sub VerifyRenderingInServerForm(ByVal control As Control) 'Verifies that the control is rendered End Sub Protected Sub gvdetails_PageIndexChanging(ByVal sender As Object, ByVal e As GridViewPageEventArgs) SaveCheckedValues() gvdetails.PageIndex = e.NewPageIndex BindGridData() PopulateCheckedValues() End Sub ''' <summary> ''' This event is used to export gridview data to Excel document ''' </summary> ''' <param name="sender"></param> ''' <param name="e"></param> Protected Sub btnExportExcel_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnExcel.Click ExportFunction("attachment;filename=GridViewExport.xls", "application/vnd.ms-excel") End Sub ''' <summary> ''' This event is used to export gridview data to word document ''' </summary> ''' <param name="sender"></param> ''' <param name="e"></param> Protected Sub btnWord_Click(ByVal sender As Object, ByVal e As System.Web.UI.ImageClickEventArgs) Handles btnWord.Click ExportFunction("attachment;filename=GridViewExport.doc", "application/vnd.ms-word") End Sub ''' <summary> ''' This Function is used to generate Excel or word document with gridview checkbox selected values ''' </summary> ''' <param name="header"></param> ''' <param name="contentType"></param> Private Sub ExportFunction(ByVal header As String, ByVal contentType As String) SaveCheckedValues() Response.Clear() Response.Buffer = True Response.AddHeader("content-disposition", header) Response.Charset = "" Response.ContentType = contentType Dim sw As New StringWriter() Dim hw As New HtmlTextWriter(sw) gvdetails.AllowPaging = False BindGridData() gvdetails.HeaderRow.Style.Add("background-color", "#FFFFFF") gvdetails.HeaderRow.Cells(0).Visible = False For i As Integer = 0 To gvdetails.HeaderRow.Cells.Count - 1 gvdetails.HeaderRow.Cells(i).Style.Add("background-color", "#df5015") gvdetails.HeaderRow.Cells(i).Style.Add("color", "#FFFFFF") Next If ViewState("CHECKED_ITEMS") IsNot Nothing Then Dim CheckBoxArray As ArrayList = DirectCast(ViewState("CHECKED_ITEMS"), ArrayList) Dim rowIdx As Integer = 0 For i As Integer = 0 To gvdetails.Rows.Count - 1 Dim row As GridViewRow = gvdetails.Rows(i) row.Visible = False Dim index As Integer = CInt(gvdetails.DataKeys(row.RowIndex).Value) If CheckBoxArray.Contains(index) Then row.Visible = True row.Cells(0).Visible = False End If Next End If gvdetails.RenderControl(hw) Response.Output.Write(sw.ToString()) Response.[End]() End Sub ''' <summary> '''This method is used to populate the saved checked status of checkbox values ''' </summary> Private Sub PopulateCheckedValues() Dim userdetails As ArrayList = DirectCast(ViewState("CHECKED_ITEMS"), ArrayList) If userdetails IsNot Nothing AndAlso userdetails.Count > 0 Then For Each gvrow As GridViewRow In gvdetails.Rows Dim index As Integer = CInt(gvdetails.DataKeys(gvrow.RowIndex).Value) If userdetails.Contains(index) Then Dim myCheckBox As CheckBox = DirectCast(gvrow.FindControl("chkSelect"), CheckBox) myCheckBox.Checked = True End If Next End If End Sub ''' <summary> ''' This method is used to save the checkedstate of checkbox values ''' </summary> Private Sub SaveCheckedValues() Dim userdetails As New ArrayList() Dim index As Integer = -1 For Each gvrow As GridViewRow In gvdetails.Rows index = CInt(gvdetails.DataKeys(gvrow.RowIndex).Value) Dim result As Boolean = DirectCast(gvrow.FindControl("chkSelect"), CheckBox).Checked ' Check in the Session If ViewState("CHECKED_ITEMS") IsNot Nothing Then userdetails = DirectCast(ViewState("CHECKED_ITEMS"), ArrayList) End If If result Then If Not userdetails.Contains(index) Then userdetails.Add(index) End If Else userdetails.Remove(index) End If Next If userdetails IsNot Nothing AndAlso userdetails.Count > 0 Then ViewState("CHECKED_ITEMS") = userdetails End If End Sub End Class |
After that run your application output would be like this
 |
If you observe above code I written code to export selected rows of gridview based on checkbox selection. In previous post I explained clearly how to maintain state of checkboxes in while paging in gridview here I used same concept to maintain the state of checkboxes while paging in gridview and I added one function that is VerifyRenderingInServerForm this function is used to avoid the error like “control must be placed in inside of form tag”.
If we set VerifyRenderingInServerForm function then compiler will think that controls rendered before exporting and our functionality will work perfectly. Here I used simple code to export gridview data to excel document and for word document we can use the same code (Export to Word) to import gridview data just by replacing GridViewExport.xls to GridViewExport.doc and application/ms-excel to application/ms-word
Demo
 |
Now select checkboxes and click on Excel button you will get output like this
Demo for Excel document
 |
Demo for Word document
 |
Download sample code attached
Now if you’re getting any error message like
Control 'gvdetails' of type 'GridView' must be placed inside a form tag with runat=server
 |
Otherwise if you’re getting any error message like
RegisterForEventValidation can only be called during Render();
 |
Check this post to solve your problem
|
If you enjoyed this post, please support the blog below. It's FREE! Get the latest Asp.net, C#.net, VB.NET, jQuery, Plugins & Code Snippets for FREE by subscribing to our Facebook, Twitter, RSS feed, or by email. |
|||
Subscribe by RSS
Subscribe by Email
|
|||
|
|
|
12 comments :
this is a great link but i got a problem when i run it ....
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
pls sort out this
i m facing a problem , when i click on the export to excel button then it will produce an error on save checked values method that specified cast in not valid
int index =-1;
foreach (GridViewRow gvrow in GridGenome.Rows)
{
index = (int)GridGenome.DataKeys[gvrow.RowIndex].Value;
Please help me out
This error is related to your datakeyname datatype.
in his post his datakeyname is an int datatype, so your datakeyname you specified for GridGenome should be int too if it is not int convert it to match the index datatype. or create a Uid int as what he did and it will work for u.
Hi,
I am trying to read the MS Word Document table and trying to display the same inthe gridview. I am able to read the word content but not able to store in Datatable and display the same in gridview?
Hello great tutorial.
I had a question, based on your tutorial, lets say I wanted to select a value from the gridview and use that value to export another query from a separate data source using the value from the gridview column, how would you do that?
How about using session variable instead table in database?
hai ur post is very useful to me..
can u give code for this scenario suppose we have two dropdownlist A(outside the gridview) and B((outside the gridview)) and a gridview. Within that gridview we have two dropdownlist C and D. Comparing this dropdownlist A and B our C(within gridview) and D(within gridview) dropdownlist should populate watever selecting in dropdownlist C should not listed in dropdownlist D
i need some help for excel importing to sql
once the excel is imported again it should not import the existing data it should start with new row is it possible
GREAT POST!
I just need a way to print the gridview by pages. I have a large gridview of 4000, paging allowed=20...so I need it to print a page of 20, then the next 20 on the next page with header, etc..
simply fantastic!
You are my favourite asp.net teacher Suresh. :)
Index was out of range. Must be non-negative and less than the size of the collection.
Parameter name: index
Dear sir ,
I got some error below mention.
int index =-1;
foreach (GridViewRow gvrow in GridGenome.Rows)
{
index = (int)GridGenome.DataKeys[gvrow.RowIndex].Value;
Please help me out
Rgards,
Daya